Ok, I might get a little spoilerish here, so forgive me if you continue to read my comment and I ruin some of the story for you. I will only speak about four characters, Littlefinger, Sansa, Sandor, and Gregor.

In the show, Littlefinger tells Sansa a story about how Gregor burned Sandor's face cause of a toy. In the books, Sandor is the one to tell this to Sansa. In fact, Littlefinger's role in the show in HUGE compared to what it is in the books, at least in presence. The books never give his perspective on things. All we know is what Littlefinger tells other people, and you can't trust **** from him EVER.

It's not Sansa that Sandor is protecting. It's all people. Sandor is not a nice guy, he admits to it and rightfully accuses others of their own corruption, which is why he refuses to be called a knight, because all knights are bastards like Gregor. In the same conversation where Sandor explains his burns to Sansa he explains that she is a beautiful bird, useless but aesthetically amusing, where he is a mad dog, monstrous ugly and murderous. Dogs like him will always treat birds like Sansa well because they are stupid and corrupt and fiercly loyal for all the wrong reasons.

TL;DR Littlefinger steals everyone's lines in the show, which makes all of that character development USELESS because Littlefinger is a LYING SACK OF **** .

To be honest a scene from Littlefinger's point of view would just be overwhelming/

Petyr
Plot to kill Hand of the King
Plot to manipulate Lannisters into killing king
Plot to mess with ex girlfriends husband/ new Hand of the King
Plot to undermine new King
Plot to overthrow King
Lol jk. Plot to betray Hand

Plot to acquire Riverlands
Plot to kidnap ex girlfriend's daughter
Plot to arrange for Tyrell's to kill new King
Huehuehuehue

Littlefinger and Cersei are such sack of **** characters. Always treating other people like **** and always winning. If they weren't such interesting characters I'd have had the Hound cut their heads off eons ago.

Margaery, right. I'd do her too.
I would only do Dany if I were a dragon in human form. (making sure she won't use me for **** or talk **** to me or threaten to use her dragons on me. Like being some kind of dovahkiin) **** Sansa. I'd rather do Arya (or rather, the actress)

i don't have a problem with casting liberties, and most of the casting in GoT has been really well done. But that is absolutely nothing at all how Daario is supposed to look. I mean, come on. At least give him the blue hair or something.